Display panel and display device

1. A display panel, having a display region, a light transmissive region, and a peripheral region, wherein the peripheral region surrounds the light transmissive region, and the display region surrounds the peripheral region,

the display panel comprising an inorganic insulating layer, an organic insulating layer, and a thin film encapsulation layer which are stacked on a base substrate,

wherein the thin film encapsulation layer comprises an inorganic layer and an organic layer stacked on each other;

wherein the organic insulating layer is disposed corresponding to the display region, the inorganic insulating layer and the thin film encapsulation layer are disposed corresponding to the display region, the peripheral region, and the light transmissive region, and a first through hole is defined in the display panel corresponding to the light transmissive region;

wherein a plurality of annular grooves are formed in the inorganic insulating layer and arranged at intervals in the peripheral region, and respective depths of the annular grooves gradually increase from a side of the peripheral region close to the light transmissive region to a side of the peripheral region away from the light transmissive region, the organic layer surrounds the annular grooves, and a portion of the inorganic layer corresponding to each of the annular grooves is in contact with the inorganic insulating layer at a side wall and a bottom of the each of the annular grooves.

2. The display panel according to claim 1 , wherein in the peripheral region, a height difference between a portion of the inorganic layer outside the each of the annular grooves and a portion of the inorganic layer at the bottom of the each of the annular grooves is formed.

3. The display panel according to claim 2 , wherein a first groove is further formed in the inorganic insulating layer and defined in the light transmissive region and the peripheral region, the annular grooves are located outside the first groove, and an orthographic projection of a bottom of the first groove on the display panel covers the light transmissive region.

4. The display panel according to claim 1 , wherein the inorganic insulating layer comprises a buffer layer, a gate insulating layer, and an interlayer insulating layer which are sequentially stacked, the organic insulating layer comprises a planarizing layer, a pixel definition layer, and a spacer layer which are stacked, and the each of the annular grooves partially or entirely penetrates the inorganic insulating layer.

5. The display panel according to claim 1 , wherein a rounded corner is formed between the side wall and the bottom of the each of the annular grooves, or an angle greater than or equal to 90° is formed between the side wall and the bottom of the each of the annular grooves.

6. The display panel according to claim 1 , wherein the side wall of the each of the annular grooves is a flat surface, an arc surface, or a stepped structure.

7. A display device, comprising the display panel of claim 1 and a camera assembly, wherein the display panel comprises the display region, the light transmissive region, and the peripheral region, the peripheral region surrounds the light transmissive region, and the display region surrounds the peripheral region;

wherein a first through hole is defined in a portion of the display panel corresponding to the light transmissive region;

wherein the camera assembly is arranged on a back portion of the display panel and disposed corresponding to the first through hole, and the camera assembly is configured to photograph an object at one side of the display panel away from the camera assembly.

8. A display panel, comprising:

a display region, a light transmissive region, and a peripheral region, wherein the peripheral region surrounds the light transmissive region, and the display region surrounds the peripheral region;

an inorganic insulating layer, an organic insulating layer, and a thin film encapsulation layer which are stacked on a base substrate, wherein the thin film encapsulation layer comprises an inorganic layer and an organic layer stacked on each other;

wherein the organic insulating layer is disposed corresponding to the display region, the inorganic insulating layer and the thin film encapsulation layer are disposed corresponding to the display region, the peripheral region, and the light transmissive region, and a first through hole is defined in the display panel corresponding to the light transmissive region;

wherein a plurality of annular grooves are formed in the inorganic insulating layer and arranged at intervals in the peripheral region, and respective depths of the annular grooves gradually increase from a side of the peripheral region close to the light transmissive region to a side of the peripheral region away from the light transmissive region, the organic layer surrounds the annular grooves, a portion of the inorganic layer corresponding to each of the annular grooves is in contact with the inorganic insulating layer at a side wall and a bottom of the each of the annular grooves, and a boundary line of the each of the annular grooves is one or a combination of a straight line, an arc line, and a polyline.

9. The display panel according to claim 8 , wherein in the peripheral region, a height difference between a portion of the inorganic layer outside the each of the annular grooves and a portion of the inorganic layer at the bottom of the each of the annular grooves is formed.

10. The display panel according to claim 9 , wherein a first groove is further formed in the inorganic insulating layer and defined in the light transmissive region and the peripheral region, the annular grooves are located outside the first groove, and an orthographic projection of a bottom of the first groove on the display panel covers the light transmissive region.

11. The display panel according to claim 8 , wherein the inorganic insulating layer comprises a buffer layer, a gate insulating layer, and an interlayer insulating layer which are sequentially stacked, the organic insulating layer comprises a planarizing layer, a pixel definition layer, and a spacer layer which are stacked, and the each of the annular grooves partially or entirely penetrates the inorganic insulating layer.

12. The display panel according to claim 8 , wherein a rounded corner is formed between the side wall and the bottom of the each of the annular grooves, or an angle greater than or equal to 90° is formed between the side wall and the bottom of the each of the annular grooves.

13. The display panel according to claim 8 , wherein the side wall of the each of the annular grooves is a flat surface, an arc surface, or a stepped structure.